The weekend-long event, which is one of the main highlights of the Edinburgh Science Festival, sees professional and amateur competitions taking place on Dunbar beach.
Take a look at some of the weird and wonderful sculptures created from rocks and stones in our picture gallery.
1. A towering effort
One of the artists competing in the event builds an impressive tower with stones of rocks.
Photo: Jeff J Mitchell
2. Easy does it
This competitor takes care to build his masterpiece at the European Stone Stacking Championships.
Photo: Jeff J Mitchell
3. One stone at a time
A competitor takes part in Europe's largest championships for all Stone Stacking and Rock Balancing enthusiasts and artists.
Photo: Jeff J Mitchell
4. A fine balance
Enthusiasts take part in the European Stone Stacking Championships in Dunbar.
Photo: Jeff J Mitchell